Guard for punch presses



Dec. 13, 1927. 1,652,719

E. ISCHINGER GUARD FOR PUNCH PRESSES Filed June 9, 1922 INVENTOR Patented Dec. 13, 1927.

UNITED STATES 1,652,719 PATENT, OFFICE.

Enrc ISCHINGER, or EAST ROCHESTER, NEW YORK, Assreiqoa or ONE-HALF 'ro FRANK KEIPER, or ROCHESTER, NEW YORK.

GUARD FOR PUNCH PRESSES.

Application filed June 9,

The object of this invention is to provide a new and improved guard for punch presses which is simple in construction, eflicient in its operation and readily applicable to any a size and type of punch press.

This and other objects of this invention will be fully illustrated in the drawing, described in the specification and pointed out in the claims at the end thereof.

In the accompanying drawing:

Figure 1 is a side elevation of a punch press with the guard attached thereto.

Figure 2 is a front elevation of the punch press with the guardattached thereto.

Figure 3 is a detail perspective view of the assembled guard.

Figure 4 is an enlarged detail perspective view of the connecting members and joints of the guard.

In the several'figures of the drawing like reference numerals indicate. like parts.

Guards for punch presses are used to protect the operator of the machine from in jury while operating'the press. Any injury caused by the press is either due to the carelessness of the operator or the failure of the press'to operate properly. In either case, however, it can be guarded against by providing a guard member which operates to swing in front of the ram of the press and in so doing brushes the operators hands or fingers away from under the ram of the press before the punch and die are brought together. \Vhile guards for performing this 86 function have heretofore been made and marketed the guard forming the subject matter of my present invention is made so that it is applicable to all sizes and types of presses and can be applied in a short time with a minimum expense Where other guards are more or less restricted to the sizes and forms of presses for which they are designed, and are costly in their application due to the longer time it takes to apply them.

As illustrated in the figures of the drawing the guard comprises the oscillating member made up of the sleeve 1 which oscillates on the pivot pin 2. The pivot pin 2 is threaded into the frame of the press for which purpose a suitable threaded hole may be provided or it may be threaded into the threaded hole of one of the gib screws 3 and take the place of the particular gib screw which it replaces. In either case the sleeve 5 1 is positioned'on one side of the ram of the 1922. Serial No. 567,149.

press and in the particular case illustrated in the figures of the drawing at the left hand side thereof;

On the sleeve 1 and tangentiallythereto are provlded a pair of sockets or sleeves 5 and 4. Through these sockets or sleeves the eye bolt 6 and guard member 7 respectively may extend and be suitably fastened therein by means of set screws 9 and 8 respectively.

The eye bolt 6 forms an arm that projects from the oscillating member tangentially to the pivot pin 2 on which the oscillating member 1s mounted. The eye 10 of the eye bolt 6 engages into the bifurcation 11 on one side of the connecting block 12 and is suitably pivoted therein. The connecting block 12 is made up in the form of a short sleeve through which the eye. bolt or'link 13 may extend and be clamped into itby means of the set screw 14. The eye 15 of the eye bolt 13 is adapted to be pivoted to the ram of the press by means of the bolt 16 so that on the reciprocation of the ram of the press the oscillating member 1 is oscillated at each stroke of the press through the train of connections above described. a The guard member 7 carries on its lower end the wing or gate 7. This wingor gate is normally held in position on one side of the ram of the press at the beginning of each stroke of the press. As soon as the ram descends, however, the eye bolt. conneetion of the ram with the oscillating member swin s theguardmember and wing acrqss the root of thepress andbrushes theoperators hand aside, before the punch and die mounted on the press are brought together on the downward stroke of the ram of the press.

The connections between the eye bolts 6 95 and 13 with the connecting block 12 and oscillating member 1 are adjustable in that each of these members can be made shorter or longer by extending it a shorter or longer distance through the sleeves formed in each mo of these members and clamping them in place in these positions. This also holds true of the connection of the guard member 7 with the oscillating member 1 which allows. the gate on the guard member to be raised 1 and lowered according to the need of the particular press to which it is applied.

With these possible. adjustments of allthe members of the guard the guard can be applied to all sizes and types of presses and if no found necessary the eye bolts or links 6 and 18 as Well as the guard member 7 can be bent to conform to or clear the parts of the frame of the press on the front of which they operate. V

I claim;

1. In a guard for a punch press, the com;

bination of an oscillating member, a pivot pin mounted on the frame of the, press on.

Which said oscillating member is mounted, a socket formed on said oscillat ng member.

alink extending intosaid socket andadapted to be adjustably held in placehereima connecting block pivoted to the outer endof said link, a second link adapted to be adjustably clamped to said connecting block, and meansfor connecting said second link to the operating part of the press.

2'. In a guard for a punch press,-the combination of an oscillating member, adapted tobe mounted on the frame of the press, a pair ofsockets formed on said oscillating member, a link adapted to. be adjust-ably held'win one of said sockets, a guard member adjustably clamped intothe other of said sockets, a second'link adjustably connected to the outer end of said first named link and means toconnect said second named link to the operating member of said press.

3: Ina guardfor punch presses, the conibination of an oscillating, member adapted to be mounted on the front of the press, an arm carried by said oscillating memberand adjustably fastened thereto, a link connectbination of a pivot pin mounted in the face of the press adjacent to the rain of the press, an oscillating member mounted on said pivot pin, a sleeve formed on said oscillating member, an arm adjustably mount ed in saidsleeve, alink connected to the end of saidarm, said link connecting the ram of the pressWith the end of said arm, means provided onsaid link to lengthen or shorten the connection between said ram and said arm, asecond sleeve formed on said oscillating member at an angle to said first sleeve formedthereon,-a guard arm adjustably mounted in said second sleeve, H Y

5. In aguard for punch presses, the com, bination of a pivot pin,an oscillating member mounted on saidpivot pin, a pair of sleeves provided on 'said pivot memher one behind the other and projecting from said oscillating member, one of said sleeves being adapted to adjustably hold an arm in place on said oscillating member and the other of said sleeves being: adapted to hold a 'guard armadjustably in place on said oscillating member.

6. In a guard for punch presses having a ram, the combination of a pivot pin mount ed 011 the frame ofthe press, an oscillating member mounted on said pivot pin, a separate arm carried on said oscillating menr her, said arm being adjustable endWise; at right angles to said pivot pin, a link pivotally connected to one endofsaid arm, a second pivot pin mounted on the ram of the press below said first pivot pin on the frame of'the press and atone side thereof, said link being pivoted atoneend thereof to said arm and being also pivotedat the other end thereof to said second pivotpin on said ram, a guard arm carried by said oscillating member, said link and saidarm forming a permanent-but adjustable connection .between said ram andisa id oscillating member. In testimonywhereof I afiix my signature. i 7 ERIC ISCHINGER. 

